Separator for electrochemical device and method for manufacturing the same
Patent Information
- Application Number
- CN202580021720.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-10-11
- Filing Date
- 2025-09-26
- Publication Date
- 2026-11-03
AI Technical Summary
Existing dry-manufacturing separators for lithium secondary batteries are insufficient in improving fast-charging performance, making it difficult to simultaneously achieve high discharge output and high-rate charging.
A membrane is manufactured using a porous polymer matrix containing polyolefin resin through a dry process. The size and distribution of the pores are controlled so that the total volume of the micropores is greater than that of the mesopores. Inorganic particles and a binder polymer coating are added to the surface of the porous polymer matrix.
It improves the charging capacity and discharging output performance of electrochemical devices. In particular, under fast charging conditions, the diaphragm can achieve a charge/discharge output of more than 10 seconds at room temperature and more than 3 seconds at low temperature.
Smart Images
Figure CN123036718A_ABST